Create a distribute volume and mount it as GlusterFS on 2 client systems.

On system-a, create a directory called "test".
On system-b, cd into the test directory.
On system-a, mv test test.2
On system-b, while still in the test directory create a file.  Then cd ..

If you then do an ls on system-b, you will see that test doesn't exist and test.2 does exist.  IF you then try to make the test directory on system-b, you get:

[root@jacobgfs31-s3 test]# mkdir test
mkdir: cannot create directory `test': Device or resource busy

You will then see that the "test" directory was still created.